tion:Monovalent cation examples H + hydrogen ion (aka a “proton”) Na + sodium ion K + potassium ion NH 4 + ammonium ion LI + lithium ion Divalentcation examples Mg ++ magnesium ionCa ++ calcium ion Monovalent anionexamples Cl chloride ion Additional ionsyou should be ABLE to know/recognize…A BIVALENT cation is an cation with an overall charge of +2 and so valence of 2. It is also known as divalent cation. Example :- A magnesium ion, Mg2+ is a divalent cation. A bivalent anion is an anion with an overall charge of -2 and so valence of 2.Since they now have more electrons than protons,anions have a negative charge. ... 4)For example, chloride ions Cl- , bromide Br- , IODIDE I-. These are monovalent anions, meaning they have a valency (COMBINING capacity} with only one ion of hydrogen.A bivalent anion is an anion with an overall charge of -2 and so valence of 2. 4)For example, chloride ions Cl- , bromide Br- , iodide I-. These are monovalent anions, meaning they have a valency (combining capacity} with only one ion of hydrogen.